Humidifier apparatus



Feb. 11, 1936. V L. KREssER HUMIDIFIER APPARATUS- Filed De. 15, 1934 2Sheets-Sheet l ATTORNEY Feb. 11, 1936. l.. KRSSER 2,030,454

HUMIDIFIER APPARATUS Filed Deo. l5, 1934 2 Sheets-Sheet 2 INVNTOR E0/IPfSSE/Q BY gwn, @ad

ATTORNEY Patented Feb. l1, 1936 UNETED STATES PATENT OFFICE HUMIDIFIERAPPARATUS Leo Kresser, Springfield, Mass., assgnor to United AmericanBosch Corporation, Springfield, Mass., a corporation of New YorkApplication December 15, 1934, Serial No. 757,645

Claims. (Cl. 261-91) This invention relates to humidifying apparatusbored to receive a post I3 which carries the weight and moreparticularly to apparatus for automatof the motor I8 and suspendedparts. The post ically malntainingapredetermined moisture conis reducedin diameter at its upper end which tent in the surrounding atmosphere.The humid- Carries a rubber bushing I4. An arm of the tripod 5 ler isintended for use in heated buildings and spider I5 has an opening whichnts over the bush- 6 households where the atmospheric moisture conilgi4. A rubber Washer l5 and e' mete-1 Washer tent commonly falls belowhealthful levels. Many I1 may be subsequently placed 0n the reduced endindustrial processes likewise require operation in 0f pOSt I3 andOVellyiug the Spider arm. the eS- a moist atmosphere. The humidifierpresented sembly being secured by a Cotter pin through the 10 in thisinvention is automatically controlled in pOSt. A Capacite-t0? mOtOl i8iS mounted 0n 10 response to the moisture content oi the air, and Spderi5 With tbe armature Shaft i9 vertically is readily disassembled forinspection and cleanpOSitiOied, 21nd iS provided With 9 Waterproof ing.frame or casing. A collar is secured to the end An object of thisinvention is to provide a hu- 0f Shaft i9. Prpl'eetiflg dOWnWaIdly fromthe C01- l5 midifier which is more efiicient in operation and ier andCoaxial with the motor Shaft I9 is e water 15 simple in constructionelevating tube 2I and positioned within the lower Another object; is toprovide a humidifier havend of the tube is an agitator plate 22. Theagiing a centralized contro1 apparatus removame as tator consists of aflat metal plate extending from a unit. one inner surface of the tube 2lto the opposite 20 A further object is to provide a humidifier surface.The collar 20 also carries a horizontally 20 which is more Silent inOperation extending atomizlng disk 23 and a spider member Other objectsand advantages will .in part be 24 having ign blades-25' A cover 26 ofSpecial obvious and in part Specifically Stated when the noise reducing:iualitles directs the humid air following specification is read inconnection with around the motor I8 to the outlet at the top of 25 thedrawings in which Fig. l is a sectional View the machin@ The @over 25 isformed With a' 25 of the apparatus; Fig. 2 is a top sectional Viewdouble wall the inner cf Which may be perforated, thereof; and Fig, 3 isa from View of the Control and the intervening space is lled with asound box. absorbent fibrous material 21. All tendency to- Referring inmore detail to Fig 1, the numeral ward drumming or resonance vibrationof the I represents a cabinet containing the entire appa- @0l/el iS tbuSprevented and IlOSeS produced by 30 ratus. Positioned within the cabinetI is awater tbe motel" and fttomizer are minimized- The tank 2 which hasa castY annular supporting ying outer wall of the cover 26 extendsdownward to 3 attached to the upper rim thereof. The ring meet theupturned flange 6 0f the annulus 5 and extends inwardly toward thecentral axis of the the Cover is held in place by hook members 28 tankand carries on its upper Surface three proriveted to the skirt thereofand engaging posts 35 jecting seats 4. Positioned on these seats is e 29Set along the Outer rim of the supporting ring sheet metal annulus 5having an upf-uned Outer 3. Extending across the lower part of thecabinet flange 6. The inner circumference of the annuiS a Shelf 30Seeulei t0 Opposite Side Walls by lus 5 has attached thereto anatomizing grid comrubber nSU-ieted fatemng members 3| Which prising a.number of closely spaced veri-,icm vanes prevent the transmission ofvibration between the 40 1. A vane ring 8 is xed to the tops of thevanes parts. Secured by resilient mounts 32 to the I and acts as a traceto prevent relative move- She1f 30 and directly under the Center 0f thement and vibration. Also attached to the inner tank 2, is a smallelectric fan .33. A deector 3l circumference of the annulus 5 is astrainer spider is placed around the fan and directs air upwardly 46 9,Supporting a tubular copper mesh strainer I0 against the bottom of thetank 2 whence it flows 45 which extends downwardly almost the full depthoutward and upward between the tank and walls of tank 2. Extendingradially inward from the of the cabinet I. At the top of the cabinet andwall of the strainer I0 are baffle plates II which surrounding the humidair outlet 35 is a metal prevent any circular motion of the water Withingrille 35 which permits the humid eil t0 be en- 50 the strainer. Securedto the outer wall of the veloped in dry air supplied by the fan 33,insur- 50 strainer I0, and above the water level, is a dished ingcomplete assimilation of the entrained moisflange I2 for catching anydrip from the atomizer ture. structure and preventing the noise causedby In the operation of the machine, water iiows drops striking the mainbody of Water. by centrifugal action up the inner wall of the ele- Eachof the seats 4 on the supporting ring 5 is vating tube 2 I, past thecollar 20 to the upper sur- 55 face of the atomizing disk 23. Drops ofwater are thrown of the disk with a speed corresponding to itsperipheral velocity and impinge against the tangential atomizing vanes1, producing a fine mist. Air enters the space between the lower surfaceof the annulus 5 and the upper surface of the supporting ring 3, theseats 4 maintaining a clearance between these surfaces. The fan blades25 direct the air against the vanes 1, where it picks up the mist andfiows upwardly as indicated by the arrows, between the cover 26 andmotor I8. Upon issuing through the outlet 35, it is enveloped in dry airas before explained, and no individual droplets remain to be depositedupon walls or fu/rniture.

Mounted in the upper part of the cabinet I in the dry air stream is acontrol box 31 which automatically completes the motor circuits when theatmospheric moisture content falls below a predetermined level. As bestillustrated in Fig. 3, the control box contains a humidistat element 38with a control adjustment 39 which determines the operation point of theassembly. A spring arm 40 maintains the expansible element 38 taut, andupon its expansion the operating pin of switch 4I is depressed. -Thepower circuit is then through the supply plug 42, the closed main switch43, the humidistat switch 4I, to the motor outlet receptacles 44 and 45and the capacitor lead 46. An auxiliary or emergency switch 41 is placedin parallel across the contacts of the humidistat switch 4| to provide ashunt circuit permitting operation of the apparatus at will, andindependent of the automatic control. As shown in Fig. 2, the emergencyswitch 41 is normally protected against unintentional operation by aremovable thimble 48 which covers it. As best illustrated in Fig; 1, theoutlet 44 supplies the humidifier motor I8, the outlet 45 supplies thefan motor 33, lead 46 connects the capacitor 49 in the iield circuit ofmotor I8, and cable 42 connects with the alternating current mains. Itwill be seen that all the critical elements and circuits of thehumidifier are concentrated within the control box and in case o'ffailure, the box may be removed as a unit and replaced with a. new one.Servicing is quickly and efciently accomplished and with a minimum ofannoyance to the owner of the machine.

Many changes and modifications may be made by anyone skilled in the artwithout departing from the spirit and scope of the invention as definedin the following claims.

What I claim and desire to secure by Letters Patent of the United Statesis:

l. In a humidifier, a water tank, an atomizer in communication with saidtank, a motor driving said atomizer, means for establishing a stream ofmoist air surrounding said motor, means for establishing a stream of dryair substantially concentric with said moist air stream, and a soundabsorbent partition separating said air streams and positioned adjacentsaid motor.

2. In a humidifier, a water tank, an atomizer in communication with saidtank, a motor driving said atomizer, means for establishing a stream ofmoist air surrounding said motor, means for establishing a stream of dryair substantially concentric with said moist air stream, and a partitionseparating said air streams and positioned adjacent said motor, saidpartition including a sound absorbent material.

3. In a humidifier, a water tank, an atomizer in communication with saidtank, a motor drivingl said atomizer, means for establishing astream ofmoist air surrounding said motor, means for establishing a stream of dryair substantially concentric with said moist air stream, and a partitionseparating said air streams and positioned adjacent said motor, saidpartition comprising two spaced walls having a sound absorbent materialtherebetween.

4. In a humidifier, a wat'er tank, an atomizer in communication withsaid tank, a motor driving said atomizer, means for establishing astream of moist air surrounding said motor, means for establishing asteam of dry air substantially concentric with said moist air stream,and a partition separating said air streams and positioned adjacent saidmotor, said partition comprising two spaced walls having a fibrousmaterial therebetween.

5. In a humidifier, a water tank, an atomizer positioned above saidtank, a motor positioned above and drivingly connected with saidatomizer, means for producing an upward fiow of moist air from saidatomizer, a cabinet having walls spaced from said tank and motor, meansfor producing an upward fiow of dry air adjacent the inner surfaces ofsaid walls, and an upwardly extending sound absorbent partition securedadjacent said motor and separating said dry and moist air flows.

LEO KRESSER.

DISCLAIMER 2,030,454. -Leo Kresser, Springfield, Mass. HUMIDIFIERAPPARATUS. Patent dated February 11, 1936. Disclaimer filed June 12,1937, by the assignee, United American Bosch Corporation.

Hereb enters this disclaimer to claims 1 and 2 of said patent.

[ io'ial Gazette July 13, 1.937]

